/*
 * Tencent is pleased to support the open source community by making Polaris available.
 *
 * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package com.tencent.polaris.common.parser;

import java.util.Objects;
import java.util.Optional;
import java.util.ServiceLoader;

public interface QueryParser {

    Optional<String> parse(String query, Object[] parameters);

    String name();

    static QueryParser load() {
        ServiceLoader<QueryParser> loader = ServiceLoader.load(QueryParser.class);
        QueryParser instance = loader.iterator().next();
        if (Objects.nonNull(instance)) {
            return instance;
        }
        String parser = System.getProperty("dubbo.polaris.query_parser");
        if (parser.equals("JsonPath")) {
            return new JsonPathQueryParser();
        }
        return new JavaObjectQueryParser();
    }

}
